who votes on tuesday, is critical to who wins. if you look here among, let me turn that off for you, among voters aged 18 to 29, this was 18% of the electorate, four years ago, you see the president's advantage, again, we expect the president to have a similar advantage among younger voters. the question is, how many vote. is the obama coalition this year similar to four years ago, again, when you look at early exit polls, are they around 18%? if that number's down, here's an opener for governor romney. if the president of the united states is above 40 in the state of ohio, which is the battleground of all battlegrounds. that's a number to watch on election day. if he can match this number, that would bode well for the president in the key battleground state of ohio. one more we want to look at, is among white evangelicals. they're also working in virginia, colorado, elsewhere.